| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_SESSION_H_ |
| #define CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_SESSION_H_ |
| |
| #include <string> |
| |
| #include "base/basictypes.h" |
| #include "base/memory/ref_counted.h" |
| #include "content/browser/dom_storage/session_storage_namespace_impl.h" |
| #include "content/common/content_export.h" |
| |
| namespace content { |
| |
| class DOMStorageContextImpl; |
| |
| // This refcounted class determines the lifetime of a session |
| // storage namespace and provides an interface to Clone() an |
| // existing session storage namespace. It may be used on any thread. |
| // See class comments for DOMStorageContextImpl for a larger overview. |
| class CONTENT_EXPORT DOMStorageSession |
| : public base::RefCountedThreadSafe<DOMStorageSession> { |
| public: |
| // Constructs a |DOMStorageSession| and allocates new IDs for it. |
| explicit DOMStorageSession(DOMStorageContextImpl* context); |
| |
| // Constructs a |DOMStorageSession| and assigns |persistent_namespace_id| |
| // to it. Allocates a new non-persistent ID. |
| DOMStorageSession(DOMStorageContextImpl* context, |
| const std::string& persistent_namespace_id); |
| |
| // Constructs a |DOMStorageSession| as an alias of |
| // |master_dom_storage_session|. Allocates a new non-persistent ID. |
| explicit DOMStorageSession(DOMStorageSession* master_dom_storage_session); |
| |
| int64 namespace_id() const { return namespace_id_; } |
| const std::string& persistent_namespace_id() const { |
| return persistent_namespace_id_; |
| } |
| void SetShouldPersist(bool should_persist); |
| bool should_persist() const; |
| bool IsFromContext(DOMStorageContextImpl* context); |
| DOMStorageSession* Clone(); |
| |
| // Constructs a |DOMStorageSession| by cloning |
| // |namespace_id_to_clone|. Allocates new IDs for it. |
| static DOMStorageSession* CloneFrom(DOMStorageContextImpl* context, |
| int64 namepace_id_to_clone); |
| |
| void AddTransactionLogProcessId(int process_id); |
| void RemoveTransactionLogProcessId(int process_id); |
| void Merge(bool actually_merge, |
| int process_id, |
| DOMStorageSession* other, |
| const SessionStorageNamespace::MergeResultCallback& callback); |
| |
| private: |
| friend class base::RefCountedThreadSafe<DOMStorageSession>; |
| |
| DOMStorageSession(DOMStorageContextImpl* context, |
| int64 namespace_id, |
| const std::string& persistent_namespace_id); |
| ~DOMStorageSession(); |
| |
| void ProcessMergeResult( |
| bool actually_merge, |
| const SessionStorageNamespace::MergeResultCallback& callback, |
| const std::string& new_persistent_namespace_id, |
| SessionStorageNamespace::MergeResult result); |
| |
| scoped_refptr<DOMStorageContextImpl> context_; |
| int64 namespace_id_; |
| std::string persistent_namespace_id_; |
| bool should_persist_; |
| |
| DISALLOW_IMPLICIT_CONSTRUCTORS(DOMStorageSession); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_SESSION_H_ |